748
FNCA52 TJSJ 070730
FWFSJU
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO
NATIONAL WEATHER SERVICE SAN JUAN PR
330 AM AST TUE JUL 7 2026
DISCUSSION
HIGHER HUMIDITY AND A PASSING TROPICAL WAVE WILL MAKE WEATHER
CONDITIONS LESS SUPPORTIVE OF RAPID WILDFIRE GROWTH THROUGH
WEDNESDAY. NEVERTHELESS, CRITICALLY DRY VEGETATION AND PERSISTENT
SOIL MOISTURE DEFICITS WILL CONTINUE TO FAVOR WILDFIRE
DEVELOPMENT, AND ANY IGNITION COULD STILL SPREAD THROUGH THE
AVAILABLE FINE FUELS DESPITE FIRE WEATHER THRESHOLDS NOT BEING
MET. AS DRIER AIR AND SAHARAN DUST RETURN LATE WEDNESDAY INTO
THURSDAY, WEATHER CONDITIONS WILL ONCE AGAIN BECOME MORE
FAVORABLE FOR WILDFIRE GROWTH THROUGH THE END OF THE WORKWEEK.
RESIDENTS AND VISITORS SHOULD AVOID OUTDOOR BURNING AND USE
EXTREME CAUTION WITH ANY ACTIVITY CAPABLE OF PRODUCING SPARKS OR
OPEN FLAMES.
PRZ014-072000-
SOUTHEAST COASTAL PLAINS-
330 AM AST TUE JUL 7 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 30 30
TEMP (24H TREND) 92 (+1) 74 (-3) 92
RH % (24H TREND) 56 (+3) 93 (+6) 56
WIND 20FT/EARLY(MPH) E 18 E 16 E 18
WIND 20FT/LATE(MPH) E 19 E 16 E 20
MIXING HGT(FT-AGL/MSL)5180 4730
TRANSPORT WND (MPH) E 23 E 24
VENT RATE (KT-FT) 103600 99330
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ015-072000-
SOUTHERN HILLS-
330 AM AST TUE JUL 7 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 20 20
TEMP (24H TREND) 88 (+2) 71 (-3) 88
RH % (24H TREND) 62 (-2) 98 (+8) 63
WIND 20FT/EARLY(MPH) E 17 E 16 E 17
WIND 20FT/LATE(MPH) E 17 E 16 E 18
MIXING HGT(FT-AGL/MSL)5760 5220
TRANSPORT WND (MPH) E 23 E 23
VENT RATE (KT-FT) 115200 104400
DISPERSION 5 5
DSI 6 5 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ016-072000-
NORTH COASTAL PLAINS-
330 AM AST TUE JUL 7 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 30 30
TEMP (24H TREND) 89 (-1) 74 (-3) 90
RH % (24H TREND) 64 (0) 98 (+7) 63
WIND 20FT/EARLY(MPH) E 19 E 23 E 18
WIND 20FT/LATE(MPH) E 25 E 16 E 24
MIXING HGT(FT-AGL/MSL)5030 4530
TRANSPORT WND (MPH) E 25 E 26
VENT RATE (KT-FT) 110660 104190
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ017-072000-
NORTHERN HILLS-
330 AM AST TUE JUL 7 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 10 30
TEMP (24H TREND) 88 (0) 72 (-3) 89
RH % (24H TREND) 66 (+3) 99 (+6) 66
WIND 20FT/EARLY(MPH) E 18 E 19 E 16
WIND 20FT/LATE(MPH) E 23 E 11 E 21
MIXING HGT(FT-AGL/MSL)5750 5480
TRANSPORT WND (MPH) E 22 E 18
VENT RATE (KT-FT) 109250 87680
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ018-072000-
WEST COAST-
330 AM AST TUE JUL 7 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 10 30
TEMP (24H TREND) 93 (+1) 74 (-2) 93
RH % (24H TREND) 61 (+1) 95 (+5) 62
WIND 20FT/EARLY(MPH) E 16 E 18 E 16
WIND 20FT/LATE(MPH) E 19 E 11 E 18
MIXING HGT(FT-AGL/MSL)4890 4640
TRANSPORT WND (MPH) E 16 E 15
VENT RATE (KT-FT) 68460 60320
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ019-072000-
EASTERN INTERIOR-
330 AM AST TUE JUL 7 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 50 30
TEMP (24H TREND) 88 (+1) 72 (-4) 88
RH % (24H TREND) 66 (+2) 100 (+7) 64
WIND 20FT/EARLY(MPH) E 17 E 18 E 18
WIND 20FT/LATE(MPH) E 18 E 18 E 18
MIXING HGT(FT-AGL/MSL)5740 4910
TRANSPORT WND (MPH) E 23 E 22
VENT RATE (KT-FT) 114800 93290
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ022-072000-
LUQUILLO MOUNTAIN RANGE-
330 AM AST TUE JUL 7 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 50 40
TEMP (24H TREND) 83 (+2) 69 (-4) 85
RH % (24H TREND) 72 (-3) 100 (+3) 71
WIND 20FT/EARLY(MPH) E 16 E 14 E 16
WIND 20FT/LATE(MPH) E 16 E 14 E 16
MIXING HGT(FT-AGL/MSL)4440 4120
TRANSPORT WND (MPH) E 25 E 24
VENT RATE (KT-FT) 97680 86520
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ023-072000-
CENTRAL MOUNTAIN RANGE-
330 AM AST TUE JUL 7 2026
TODAY TONIGHT WED
CLOUD COVER MCLEAR MCLEAR PCLDY
PRECIP TYPE SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 20 0 30
TEMP (24H TREND) 88 (+4) 69 (-3) 88
RH % (24H TREND) 68 (0) 98 (+6) 69
WIND 20FT/EARLY(MPH) E 11 E 13 E 11
WIND 20FT/LATE(MPH) E 16 E 9 E 13
MIXING HGT(FT-AGL/MSL)6750 6470
TRANSPORT WND (MPH) E 20 E 17
VENT RATE (KT-FT) 114750 97050
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ024-072000-
CAYEY MOUNTAIN RANGE-
330 AM AST TUE JUL 7 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 60 30
TEMP (24H TREND) 83 (+1) 70 (-3) 84
RH % (24H TREND) 73 (+2) 100 (+2) 72
WIND 20FT/EARLY(MPH) E 16 E 14 E 14
WIND 20FT/LATE(MPH) E 16 E 13 E 17
MIXING HGT(FT-AGL/MSL)4890 4370
TRANSPORT WND (MPH) E 25 E 25
VENT RATE (KT-FT) 107580 96140
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ025-072000-
VIEQUES-
330 AM AST TUE JUL 7 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 30 20
TEMP (24H TREND) 89 (+1) 78 (-1) 90
RH % (24H TREND) 60 (-2) 91 (+4) 60
WIND 20FT/EARLY(MPH) E 20 E 20 E 21
WIND 20FT/LATE(MPH) E 20 E 20 E 21
MIXING HGT(FT-AGL/MSL)3490 3410
TRANSPORT WND (MPH) E 26 E 25
VENT RATE (KT-FT) 80270 75020
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ026-072000-
CULEBRA-
330 AM AST TUE JUL 7 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 30 30
TEMP (24H TREND) 92 (+3) 78 (-2) 92
RH % (24H TREND) 60 (-5) 92 (+5) 59
WIND 20FT/EARLY(MPH) E 20 E 20 E 21
WIND 20FT/LATE(MPH) E 20 E 20 E 21
MIXING HGT(FT-AGL/MSL)3460 3610
TRANSPORT WND (MPH) E 26 E 25
VENT RATE (KT-FT) 79580 79420
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ027-072000-
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-
330 AM AST TUE JUL 7 2026
TODAY TONIGHT WED
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 10 10
TEMP (24H TREND) 93 (+2) 75 (-3) 93
RH % (24H TREND) 55 (+1) 89 (+7) 56
WIND 20FT/EARLY(MPH) E 23 E 25 E 23
WIND 20FT/LATE(MPH) E 26 E 17 E 25
MIXING HGT(FT-AGL/MSL)5450 4970
TRANSPORT WND (MPH) E 24 E 25
VENT RATE (KT-FT) 114450 109340
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ001-072000-
SAINT THOMAS AND SAINT JOHN-
330 AM AST TUE JUL 7 2026
TODAY TONIGHT WED
CLOUD COVER MCLEAR PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 30 20
TEMP (24H TREND) 88 (+2) 76 (-3) 88
RH % (24H TREND) 64 (-4) 93 (+5) 63
WIND 20FT/EARLY(MPH) E 21 E 20 E 21
WIND 20FT/LATE(MPH) E 19 E 20 E 21
MIXING HGT(FT-AGL/MSL)3490 3840
TRANSPORT WND (MPH) E 29 E 26
VENT RATE (KT-FT) 87250 88320
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ002-072000-
ST CROIX-
330 AM AST TUE JUL 7 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 30 20
TEMP (24H TREND) 89 (+2) 77 (-2) 89
RH % (24H TREND) 64 (-2) 94 (+4) 63
WIND 20FT/EARLY(MPH) E 21 E 19 E 21
WIND 20FT/LATE(MPH) E 19 E 19 E 21
MIXING HGT(FT-AGL/MSL)4620 4450
TRANSPORT WND (MPH) E 26 E 31
VENT RATE (KT-FT) 106260 120150
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
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